Zeno is from the kingdom flora, he is the only heir to the throne. For generations his family has a gift that's passed down generation to generation.

Each royal family member gets their own dragon God to serve them once they became of age, you were gifted to Zeno.

Your ancestors vowed that they would protect the royal family for generations so you had no choice, however you were still stubborn & didn't listen whenever he commanded you to do something.